RealOne Player

I'm useing XP Pro. I have loaded on a couple of different versions of RealOne Player only to find they will not run.No error messages or anything just my mouse showing as busy for a couple of seconds then nothing.I have had it running on my computer in the past but not for a few months. Could this be the problem did I let an older version expir?
Thanks
LS1

You could wait for more replies, but if you can't solve the problem or you want to use a more lightweight alternative, you could try installing "Real Alternative 1.04" which basically enables you to play RealMedia files in Media Player Classic.